£12 ROMEROLAGUS 
and jugals elongated posteriorly; clavicles articulating with sternum 
and scapula; prosternum broader than long before first pair of ribs; 
mesosternum of three segments; six pair of ribs articulating with 
sternum; fifth cervical vertebra with transverse process directed 
outward, not backward; transverse process of lumbar vertebra 
broadly expanded; small hypopophyses present on first three lumbar 
vertebra; inferior crest of navicular bone short and not produced 
under base of metatarsal (ex Merr., l. c.) 
Fig. 79. ROMEROLAGUS NELSONI. 
No. 57949 U. S. Nat. Mus. Coll. Nat. size 
427. *nelsoni (/omerolagus), Merr., Proc. Biol. Soc. Wash., x, 1896, 
g 
liast. (Lepus), Ferrari-Perez, Cat. Comis. Geogr. Explor. Repub. 
NELSON’sS Hart 
lvpe locality. West slope of Mt. Popocatepetl, State of Mexico, 
( 
Mexico Altitude, LO0,000—I 2,000 feet. 
[tis a moot question whether this species should not bear the name 
ad of nels the figure on plate 42 of the Catalogue above cited represent 
undoubtedly this species. It is said that a description was also published 
Mexican newspaper Che figure in the plate gives a better idea of the ani- 
than can | ybtained trom any deseription 
